Impression receiving device



March 23, 1937. J p sc 2,074,855

IMPRESSION RECEIVING DEVICE Filed Jan. 24, 1934 ukzw 08105 .H. Pan/sum,

Patented Mar. 23, 1937 2,074,855

UNITED STATES PATENT OFFICE 2,074,855 masssron RECEIVING DEVICE lens A. Paasche, Wilmette, IIL, assignor to The Strathmore Company, Aurora, 111., a corporation of Illinois 1 Application January 24, 1934, Serial No. 708,037

9 Claims. (01. 35-66) The invention relates to impression receiving While the invention is susceptible of various devices and more particularly to devices of the modifications and alternative constructions, I type embodying a permanent arrangement for have shown in the drawing and will-herein dereceiving writing or drawing impressions and for scribe in detail the preferred embodiment, but

preserving such impressions as long as desired it is to be understood that I do not thereby in- 5 and from which the impressions can be instantly tend to limit the invention to the specific form obliterated without injury to the parts or the disclosed, but intend to cover all modifications use of any erasing instrumentality. and alternative constructions falling within the A general object of the invention is to provide spirit and scope of the invention as expressed 10 an improved device of this nature which is exin the appended claims. 10

ceedingly durable and maybe produced by a With reference to the drawing, a form of denovel process wherein the cost of manufacture is vice is shown" for illustrative purposes as comprismaterially reduced. ing a tablet or pad embodyinga base I 0, an im- Another object of the invention resides in the pression sheet II and a protecting cover I! all 1;, provision of an improved device embodyingabase secured together along one edge, as at I 3, for of plastic material having superposed thereon a relative separation. The base Ill includes a firm sheet of transparent material which comprises inflexible supporting part M (Fig. 2) having on the impression surface proper and is treated on one face thereof a coating I5 of a. colored and the side contacting the base material to render relatively plastic material such as a wax having the transparent sheet at least semi-opaque. pigment therein. The material should be firm 20 More specifically stated, a further object reyet sufliciently plastic to receive impressions sides in the provision of a flexible impression made by a marking instrument and should be sheet for a device of this character having on one non-drying so that it will remain relatively soft. surface a. thin film or layer which is intimately Preferably the material is spread upon the sup- 0 and permanently united therewith and is comporting part while the material and part are in prised of a great number of exceedingly small nona. heated condition by a spray coating operation transparent particles to produce a semi-opaque so that the material will be evenly and uniformly sheet which will adhere to a, plastic base where distributed.

ever it is pressed thereagainst and will appear to The impression sheet comprises generally a be transparent throughout such adhering porthin, flexible and transparent sheet which pref- 3Q tions. erably presents a smooth outer surface and is Another object is to provide a novel sheet of treated on the surface opposing the base matetransparent material which is treated to impart rial to provide a somewhat rough and opaque or to one surface thereof roughened and semisemi-opaque face. When certain areas of such opaque characteristics. a surface are pressed against the base material, 35

A further object, more specifically stated, is to as by moving a writing instrument across the provide a novel transparent sheet of flexible masmooth outer surface of the impression sheet, terial which has applied to one face thereof prefthe roughened face adheres to the plastic mateerably by a spraying operation a great number rial throughout such areas and the intimate con- 40 of evenly dispersed and finely divided particles tact therebetween eliminates the opacity of the 40 of opaque or semi-opaque material which includes face with the result that the colored base is a fluid carrying agent capable of acting as a 501- clearly visible through these areas.

vent of the transparent sheet whereby each par- The impression sheet is preferably treated in ticle will become permanently affixed to said the following manner to produce the rough and at sheet. least semi-opaque face thereon. A solution is Other objects and advantages will become apprepared using, as a. base, a commercial type of parent in the following description and from the synthetic enamel or a lacquer having an opaque accompanying drawing, in which: pigment therein. The color is preferably white. Figure 1 is a plan view of a device embodyin Such enamel or lacquer is mixed with a suitable the features of the invention. fluid to produce a quite dilute or thin mixture 50 Fig. 2 is a. fragmentary transverse sectional which has somewhat of a. milky appearance and view of the device on a greatly enlarged scale. consistency. The dilutent which is employed Fig. 3 is a fragmentary plan view of the treated should be an effective and somewhat volatile face of the impression sheet also on an enlarged solvent of the material from which the impresscale. sion sheet is formed. For example, if the sheet 55 attached by the eacess solvent in moist particle with the result that the In operation, pressure applied to the smooth surface of the impression sheet causes the undertheimpressedareathesheetistoall appearances transparent. Hence, the color of the plastic It be evident from the foregoing um device of simple form and improved construction hasbeenpmducedwhcrehythecostofmanufacrelatively thin layer of finely divided particles of a substance ng light reflecting properties intimately and permanently disposed upon the surface of said sheet which engages the plastic material, saidlayerbeing thinenoughsothatan impression on said flexible sheet presses the underlying particles thereon into the plastic materialtoeliminatelightreflectionbytheparticles and render said material visible through the sheet in the in areas.

2. A translucent impression revealing device in cluding in combination a colored base including a relatively plastic material, a thin, flexible sheet of normally transparent material treated on one face to render the same light reflective and substantially frosted lisht colored and opaque in appearance, said treated face being superimposed onsaidbaseandadaptedtobeimpressedagainst said plastic material so that the impressed portionsofthefacewilladheretothebaseandthe color;will show therethrough, and means for perm'anentlyconnectingsaidsheettosaidbasenear oneedgethereofsothatthesheetmaybcmoved incombinatiomacoloredbaleinclndingaplastic impression receiving material and a flexible nor- 'mallytransparentsheetdhposedinseparable overlying relation to said material, that surface of said sheet which isdisposed in opposition to said base material being superficially treated to impart a romhened and semi-opaque light colmed appearance thereto while leaving tin body of'the sheettransparmttoaffosdeomfltevkibility therethrough to said treated surface, the opposite surface of the sheet being mouth and of a. character substantially unaffected by a writing instrument such as a pencil or stylus moved in contact therewith for imp parts of said semi-opaque surface into adhering relation with said base material to render the colored base visible through the transparent both of the sheet.

4. As anew article of manufacture, an impression sheet which is normally translucent throughout to permit colored objects to be seen therethrough and soluble in certain solvents, one face of the sheet having applied thereto a light colored dulling substance including a small quantity of a solvent of said sheet adapted to attack said one face superficially and upon drying leave said substance in permanent association with the sheet whereby said one face has a frosted appearance, andacoloredbaseincludingaplastic impression receiving material. said one-face beingsuperimposedonsaidbasesoastoadhere theretoinsuchareasasreeeivethepressureof an impression on said sheet.

5. For use with an impression receiving device having a dark base including a plastic face, an

movement of pencil-like means across nil smooth surface to render said Pressed areas.

Permittingthecolorofthebasetnbeseenthere through, said sheet having m it: a relatively thin and Mme of finely divided light colored particles cr s s: stantially opaque substance tly united thereto to provide a light tilt: the dark base substantially invisible through the sheet when the sheet is sn upon said base with said layer against said plastic face but permitting clear visibility of the color of said base through said translucent body when an instrument is moved over said smooth surface to imadherence with press a portion of said layer into the plastic base.

"I. For use with an mally translucent material which is readily soluble in certain solvents and throwh which an ad- Joining dark colored surface may be observed, one

surface of said body being of glassy smoothness, and the opposite surface of said body having thereon a dulling substance consisting of minute light colored particles each applied to the sheet 5 in the presence of a small quantity of a volatile solvent of the body acting to dissolve said opposite face superficially and without affecting the remaining thickness of said body to effect a permanent union of the particles with the sheet and 10 impart a frosted appearance to said opposite surface to avoid visibility of such an adjoining dark colored surface.

8. An impression revealing device comprising, in combination, a base having an impression re- 15 ceiving material thereon. and a flexible sheet disposed in separable overlying relation to said material and providing a smooth surface upon which impressions may be made, said sheet being transparent and. having only the base opposing 20 surface thereof treated to impart light reflecting properties superficially to said opposing surface to give the latter surface an opaque light colored appearance capable of substantially concealdark color plastic impression surface and a flexible sheet superimposed in separable relation to said impression surface, said sheet being of substantially transparent material and having a 15 smooth outer writing face and an opposite face for contact with the impression surface on said base, only said last mentioned face embodying an exceedingly thin superficial surface of light reflecting particles imparting an opaque frosted ap- 20 pearance to the sheet.

JENS A. PAASCHE.

CERTIFICATE OI CORRECTION.

Patent No. 2.074.855.

March 23, 1937.

JENS A. PAASCHE.

It. is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

first column. line 68, claim 2,

Page 2.

strike out the word "frosted"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this let day of June, A. D. 1937.

(Seal) Henry Van Arsdale Acting Commissioner of Patents.

surface of said body being of glassy smoothness, and the opposite surface of said body having thereon a dulling substance consisting of minute light colored particles each applied to the sheet 5 in the presence of a small quantity of a volatile solvent of the body acting to dissolve said opposite face superficially and without affecting the remaining thickness of said body to effect a permanent union of the particles with the sheet and 10 impart a frosted appearance to said opposite surface to avoid visibility of such an adjoining dark colored surface.

8. An impression revealing device comprising, in combination, a base having an impression re- 15 ceiving material thereon. and a flexible sheet disposed in separable overlying relation to said material and providing a smooth surface upon which impressions may be made, said sheet being transparent and. having only the base opposing 20 surface thereof treated to impart light reflecting properties superficially to said opposing surface to give the latter surface an opaque light colored appearance capable of substantially concealdark color plastic impression surface and a flexible sheet superimposed in separable relation to said impression surface, said sheet being of substantially transparent material and having a 15 smooth outer writing face and an opposite face for contact with the impression surface on said base, only said last mentioned face embodying an exceedingly thin superficial surface of light reflecting particles imparting an opaque frosted ap- 20 pearance to the sheet.

JENS A. PAASCHE.

CERTIFICATE OI CORRECTION.

Patent No. 2.074.855.

March 23, 1937.

JENS A. PAASCHE.

It. is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

first column. line 68, claim 2,

Page 2.

strike out the word "frosted"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this let day of June, A. D. 1937.

(Seal) Henry Van Arsdale Acting Commissioner of Patents. 

